Rajeshbabu Chintaguntla created HBASE-15600:
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Summary: Add provision for adding mutations to memstore or able to
write to same region in batchMutate coprocessor hooks
Key: HBASE-15600
URL: https://issues.apache.org/jira/browse/HBASE-15600
Project: HBase
Issue Type: Improvement
Reporter: Rajeshbabu Chintaguntla
Assignee: Rajeshbabu Chintaguntla
Fix For: 1.0.5, 2.0.0, 0.98.19, 1.1.5, 1.2.2
As part of PHOENIX-1734 we need to write the index updates to same region from
coprocessors but writing from batchMutate API is not allowed because of mvcc.
Raised PHOENIX-2742 to discuss any alternative way to write to the same region
directly or not but not having any proper solution there.
Currently we have provision to write wal edits from coprocessors. We can set
wal edits in MiniBatchOperationInProgress.
{noformat}
/**
* Sets the walEdit for the operation(Mutation) at the specified position.
* @param index
* @param walEdit
*/
public void setWalEdit(int index, WALEdit walEdit) {
this.walEditsFromCoprocessors[getAbsoluteIndex(index)] = walEdit;
}
{noformat}
Similarly we can allow to write mutations from coprocessors to memstore as
well. Or else we should provide the batch mutation API allow write in batch
mutate coprocessors.
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